text: /*-
   * SPDX-License-Identifier: BSD-4-Clause
   *
   * Copyright (c) 2002-2003
   * 	Hidetoshi Shimokawa. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *
   *	This product includes software developed by Hidetoshi Shimokawa.
   *
   * 4. Neither the name of the author nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * $FreeBSD$
   */
  
  #ifdef HAVE_KERNEL_OPTION_HEADERS
  #include "opt_device_polling.h"
  #include "opt_inet.h"
  #endif
  
  #include <sys/param.h>
  #include <sys/kernel.h>
  #include <sys/malloc.h>
  #include <sys/mbuf.h>
  #include <sys/socket.h>
  #include <sys/sockio.h>
  #include <sys/sysctl.h>
  #include <sys/systm.h>
  #include <sys/module.h>
  #include <sys/bus.h>
  #include <machine/bus.h>
  
  #include <net/bpf.h>
  #include <net/ethernet.h>
  #include <net/if.h>
  #include <net/if_var.h>
  #include <net/if_arp.h>
  #include <net/if_types.h>
  #include <net/if_vlan_var.h>
  
  #include <dev/firewire/firewire.h>
  #include <dev/firewire/firewirereg.h>
  #include <dev/firewire/if_fwevar.h>
  
  #define FWEDEBUG	if (fwedebug) if_printf
  #define TX_MAX_QUEUE	(FWMAXQUEUE - 1)
  
  /* network interface */
  static void fwe_start (struct ifnet *);
  static int fwe_ioctl (struct ifnet *, u_long, caddr_t);
  static void fwe_init (void *);
  
  static void fwe_output_callback (struct fw_xfer *);
  static void fwe_as_output (struct fwe_softc *, struct ifnet *);
  static void fwe_as_input (struct fw_xferq *);
  
  static int fwedebug = 0;
  static int stream_ch = 1;
  static int tx_speed = 2;
  static int rx_queue_len = FWMAXQUEUE;
  
  static MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
  SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RWTUN, &fwedebug, 0, "");
  SYSCTL_DECL(_hw_firewire);
  static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
      "Ethernet emulation subsystem");
  SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RWTUN, &stream_ch, 0,
  	"Stream channel to use");
  SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RWTUN, &tx_speed, 0,
  	"Transmission speed");
  SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len,
  	0, "Length of the receive queue");
  
  #ifdef DEVICE_POLLING
  static poll_handler_t fwe_poll;
  
  static int
  fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
  {
  	struct fwe_softc *fwe;
  	struct firewire_comm *fc;
  
  	if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
  		return (0);
  
  	fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
  	fc = fwe->fd.fc;
  	fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
  	return (0);
  }
  #endif /* DEVICE_POLLING */
  
  static void
  fwe_identify(driver_t *driver, device_t parent)
  {
  	BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
  }
  
  static int
  fwe_probe(device_t dev)
  {
  	device_t pa;
  
  	pa = device_get_parent(dev);
  	if (device_get_unit(dev) != device_get_unit(pa)) {
  		return (ENXIO);
  	}
  
  	device_set_desc(dev, "Ethernet over FireWire");
  	return (0);
  }
  
  static int
  fwe_attach(device_t dev)
  {
  	struct fwe_softc *fwe;
  	struct ifnet *ifp;
  	int unit, s;
  	u_char eaddr[6];
  	struct fw_eui64 *eui;
  
  	fwe = ((struct fwe_softc *)device_get_softc(dev));
  	unit = device_get_unit(dev);
  
  	bzero(fwe, sizeof(struct fwe_softc));
  	mtx_init(&fwe->mtx, "fwe", NULL, MTX_DEF);
  	/* XXX */
  	fwe->stream_ch = stream_ch;
  	fwe->dma_ch = -1;
  
  	fwe->fd.fc = device_get_ivars(dev);
  	if (tx_speed < 0)
  		tx_speed = fwe->fd.fc->speed;
  
  	fwe->fd.dev = dev;
  	fwe->fd.post_explore = NULL;
  	fwe->eth_softc.fwe = fwe;
  
  	fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
  	fwe->pkt_hdr.mode.stream.sy = 0;
  	fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
  
  	/* generate fake MAC address: first and last 3bytes from eui64 */
  #define LOCAL (0x02)
  #define GROUP (0x01)
  
  	eui = &fwe->fd.fc->eui;
  	eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
  	eaddr[1] = FW_EUI64_BYTE(eui, 1);
  	eaddr[2] = FW_EUI64_BYTE(eui, 2);
  	eaddr[3] = FW_EUI64_BYTE(eui, 5);
  	eaddr[4] = FW_EUI64_BYTE(eui, 6);
  	eaddr[5] = FW_EUI64_BYTE(eui, 7);
  	printf("if_fwe%d: Fake Ethernet address: "
  		"%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
  		eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
  
  	/* fill the rest and attach interface */
  	ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER);
  	if (ifp == NULL) {
  		device_printf(dev, "can not if_alloc()\n");
  		return (ENOSPC);
  	}
  	ifp->if_softc = &fwe->eth_softc;
  
  	if_initname(ifp, device_get_name(dev), unit);
  	ifp->if_init = fwe_init;
  	ifp->if_start = fwe_start;
  	ifp->if_ioctl = fwe_ioctl;
  	ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
  	ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
  
  	s = splimp();
  	ether_ifattach(ifp, eaddr);
  	splx(s);
  
          /* Tell the upper layer(s) we support long frames. */
  	ifp->if_hdrlen = sizeof(struct ether_vlan_header);
  	ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING;
  	ifp->if_capenable |= IFCAP_VLAN_MTU;
  
  	FWEDEBUG(ifp, "interface created\n");
  	return 0;
  }
  
  static void
  fwe_stop(struct fwe_softc *fwe)
  {
  	struct firewire_comm *fc;
  	struct fw_xferq *xferq;
  	struct ifnet *ifp = fwe->eth_softc.ifp;
  	struct fw_xfer *xfer, *next;
  	int i;
  
  	fc = fwe->fd.fc;
  
  	if (fwe->dma_ch >= 0) {
  		xferq = fc->ir[fwe->dma_ch];
  
  		if (xferq->flag & FWXFERQ_RUNNING)
  			fc->irx_disable(fc, fwe->dma_ch);
  		xferq->flag &=
  			~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
  			FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
  		xferq->hand =  NULL;
  
  		for (i = 0; i < xferq->bnchunk; i++)
  			m_freem(xferq->bulkxfer[i].mbuf);
  		free(xferq->bulkxfer, M_FWE);
  
  		for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
  					xfer = next) {
  			next = STAILQ_NEXT(xfer, link);
  			fw_xfer_free(xfer);
  		}
  		STAILQ_INIT(&fwe->xferlist);
  
  		xferq->bulkxfer =  NULL;
  		fwe->dma_ch = -1;
  	}
  
  	ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
  }
  
  static int
  fwe_detach(device_t dev)
  {
  	struct fwe_softc *fwe;
  	struct ifnet *ifp;
  	int s;
  
  	fwe = device_get_softc(dev);
  	ifp = fwe->eth_softc.ifp;
  
  #ifdef DEVICE_POLLING
  	if (ifp->if_capenable & IFCAP_POLLING)
  		ether_poll_deregister(ifp);
  #endif
  	s = splimp();
  
  	fwe_stop(fwe);
  	ether_ifdetach(ifp);
  	if_free(ifp);
  
  	splx(s);
  	mtx_destroy(&fwe->mtx);
  	return 0;
  }
  
  static void
  fwe_init(void *arg)
  {
  	struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
  	struct firewire_comm *fc;
  	struct ifnet *ifp = fwe->eth_softc.ifp;
  	struct fw_xferq *xferq;
  	struct fw_xfer *xfer;
  	struct mbuf *m;
  	int i;
  
  	FWEDEBUG(ifp, "initializing\n");
  
  	/* XXX keep promiscoud mode */
  	ifp->if_flags |= IFF_PROMISC;
  
  	fc = fwe->fd.fc;
  	if (fwe->dma_ch < 0) {
  		fwe->dma_ch = fw_open_isodma(fc, /* tx */0);
  		if (fwe->dma_ch < 0)
  			return;
  		xferq = fc->ir[fwe->dma_ch];
  		xferq->flag |= FWXFERQ_EXTBUF |
  				FWXFERQ_HANDLER | FWXFERQ_STREAM;
  		fwe->stream_ch = stream_ch;
  		fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
  		xferq->flag &= ~0xff;
  		xferq->flag |= fwe->stream_ch & 0xff;
  		/* register fwe_input handler */
  		xferq->sc = (caddr_t) fwe;
  		xferq->hand = fwe_as_input;
  		xferq->bnchunk = rx_queue_len;
  		xferq->bnpacket = 1;
  		xferq->psize = MCLBYTES;
  		xferq->queued = 0;
  		xferq->buf = NULL;
  		xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
  			sizeof(struct fw_bulkxfer) * xferq->bnchunk,
  							M_FWE, M_WAITOK);
  		STAILQ_INIT(&xferq->stvalid);
  		STAILQ_INIT(&xferq->stfree);
  		STAILQ_INIT(&xferq->stdma);
  		xferq->stproc = NULL;
  		for (i = 0; i < xferq->bnchunk; i++) {
  			m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
  			xferq->bulkxfer[i].mbuf = m;
  			m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
  			STAILQ_INSERT_TAIL(&xferq->stfree,
  					&xferq->bulkxfer[i], link);
  		}
  		STAILQ_INIT(&fwe->xferlist);
  		for (i = 0; i < TX_MAX_QUEUE; i++) {
  			xfer = fw_xfer_alloc(M_FWE);
  			if (xfer == NULL)
  				break;
  			xfer->send.spd = tx_speed;
  			xfer->fc = fwe->fd.fc;
  			xfer->sc = (caddr_t)fwe;
  			xfer->hand = fwe_output_callback;
  			STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
  		}
  	} else
  		xferq = fc->ir[fwe->dma_ch];
  
  
  	/* start dma */
  	if ((xferq->flag & FWXFERQ_RUNNING) == 0)
  		fc->irx_enable(fc, fwe->dma_ch);
  
  	ifp->if_drv_flags |= IFF_DRV_RUNNING;
  	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
  
  #if 0
  	/* attempt to start output */
  	fwe_start(ifp);
  #endif
  }
  
  
  static int
  fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
  {
  	struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
  	struct ifstat *ifs = NULL;
  	int s, error;
  
  	switch (cmd) {
  		case SIOCSIFFLAGS:
  			s = splimp();
  			if (ifp->if_flags & IFF_UP) {
  				if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
  					fwe_init(&fwe->eth_softc);
  			} else {
  				if (ifp->if_drv_flags & IFF_DRV_RUNNING)
  					fwe_stop(fwe);
  			}
  			/* XXX keep promiscoud mode */
  			ifp->if_flags |= IFF_PROMISC;
  			splx(s);
  			break;
  		case SIOCADDMULTI:
  		case SIOCDELMULTI:
  			break;
  
  		case SIOCGIFSTATUS:
  			s = splimp();
  			ifs = (struct ifstat *)data;
  			snprintf(ifs->ascii, sizeof(ifs->ascii),
  			    "\tch %d dma %d\n",	fwe->stream_ch, fwe->dma_ch);
  			splx(s);
  			break;
  		case SIOCSIFCAP:
  #ifdef DEVICE_POLLING
  		    {
  			struct ifreq *ifr = (struct ifreq *) data;
  			struct firewire_comm *fc = fwe->fd.fc;
  
  			if (ifr->ifr_reqcap & IFCAP_POLLING &&
  			    !(ifp->if_capenable & IFCAP_POLLING)) {
  				error = ether_poll_register(fwe_poll, ifp);
  				if (error)
  					return (error);
  				/* Disable interrupts */
  				fc->set_intr(fc, 0);
  				ifp->if_capenable |= IFCAP_POLLING;
  				return (error);
  			}
  			if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
  			    ifp->if_capenable & IFCAP_POLLING) {
  				error = ether_poll_deregister(ifp);
  				/* Enable interrupts. */
  				fc->set_intr(fc, 1);
  				ifp->if_capenable &= ~IFCAP_POLLING;
  				return (error);
  			}
  		    }
  #endif /* DEVICE_POLLING */
  			break;
  		default:
  			s = splimp();
  			error = ether_ioctl(ifp, cmd, data);
  			splx(s);
  			return (error);
  	}
  
  	return (0);
  }
  
  static void
  fwe_output_callback(struct fw_xfer *xfer)
  {
  	struct fwe_softc *fwe;
  	struct ifnet *ifp;
  	int s;
  
  	fwe = (struct fwe_softc *)xfer->sc;
  	ifp = fwe->eth_softc.ifp;
  	/* XXX error check */
  	FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
  	if (xfer->resp != 0)
  		if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
  	m_freem(xfer->mbuf);
  	fw_xfer_unload(xfer);
  
  	s = splimp();
  	FWE_LOCK(fwe);
  	STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
  	FWE_UNLOCK(fwe);
  	splx(s);
  
  	/* for queue full */
  	if (ifp->if_snd.ifq_head != NULL)
  		fwe_start(ifp);
  }
  
  static void
  fwe_start(struct ifnet *ifp)
  {
  	struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
  	int s;
  
  	FWEDEBUG(ifp, "starting\n");
  
  	if (fwe->dma_ch < 0) {
  		struct mbuf	*m = NULL;
  
  		FWEDEBUG(ifp, "not ready\n");
  
  		s = splimp();
  		do {
  			IF_DEQUEUE(&ifp->if_snd, m);
  			if (m != NULL)
  				m_freem(m);
  			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
  		} while (m != NULL);
  		splx(s);
  
  		return;
  	}
  
  	s = splimp();
  	ifp->if_drv_flags |= IFF_DRV_OACTIVE;
  
  	if (ifp->if_snd.ifq_len != 0)
  		fwe_as_output(fwe, ifp);
  
  	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
  	splx(s);
  }
  
  #define HDR_LEN 4
  #ifndef ETHER_ALIGN
  #define ETHER_ALIGN 2
  #endif
  /* Async. stream output */
  static void
  fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
  {
  	struct mbuf *m;
  	struct fw_xfer *xfer;
  	struct fw_xferq *xferq;
  	struct fw_pkt *fp;
  	int i = 0;
  
  	xfer = NULL;
  	xferq = fwe->fd.fc->atq;
  	while ((xferq->queued < xferq->maxq - 1) &&
  			(ifp->if_snd.ifq_head != NULL)) {
  		FWE_LOCK(fwe);
  		xfer = STAILQ_FIRST(&fwe->xferlist);
  		if (xfer == NULL) {
  #if 0
  			printf("if_fwe: lack of xfer\n");
  #endif
  			FWE_UNLOCK(fwe);
  			break;
  		}
  		STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
  		FWE_UNLOCK(fwe);
  
  		IF_DEQUEUE(&ifp->if_snd, m);
  		if (m == NULL) {
  			FWE_LOCK(fwe);
  			STAILQ_INSERT_HEAD(&fwe->xferlist, xfer, link);
  			FWE_UNLOCK(fwe);
  			break;
  		}
  		BPF_MTAP(ifp, m);
  
  		/* keep ip packet alignment for alpha */
  		M_PREPEND(m, ETHER_ALIGN, M_NOWAIT);
  		fp = &xfer->send.hdr;
  		*(uint32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
  		fp->mode.stream.len = m->m_pkthdr.len;
  		xfer->mbuf = m;
  		xfer->send.pay_len = m->m_pkthdr.len;
  
  		if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
  			/* error */
  			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
  			/* XXX set error code */
  			fwe_output_callback(xfer);
  		} else {
  			if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
  			i++;
  		}
  	}
  #if 0
  	if (i > 1)
  		printf("%d queued\n", i);
  #endif
  	if (i > 0)
  		xferq->start(fwe->fd.fc);
  }
  
  /* Async. stream output */
  static void
  fwe_as_input(struct fw_xferq *xferq)
  {
  	struct mbuf *m, *m0;
  	struct ifnet *ifp;
  	struct fwe_softc *fwe;
  	struct fw_bulkxfer *sxfer;
  	struct fw_pkt *fp;
  	u_char *c;
  
  	fwe = (struct fwe_softc *)xferq->sc;
  	ifp = fwe->eth_softc.ifp;
  
  	/* We do not need a lock here because the bottom half is serialized */
  	while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
  		STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
  		fp = mtod(sxfer->mbuf, struct fw_pkt *);
  		if (fwe->fd.fc->irx_post != NULL)
  			fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
  		m = sxfer->mbuf;
  
  		/* insert new rbuf */
  		sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
  		if (m0 != NULL) {
  			m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
  			STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
  		} else
  			printf("%s: m_getcl failed\n", __FUNCTION__);
  
  		if (sxfer->resp != 0 || fp->mode.stream.len <
  		    ETHER_ALIGN + sizeof(struct ether_header)) {
  			m_freem(m);
  			if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
  			continue;
  		}
  
  		m->m_data += HDR_LEN + ETHER_ALIGN;
  		c = mtod(m, u_char *);
  		m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN;
  		m->m_pkthdr.rcvif = ifp;
  #if 0
  		FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
  			 "%02x %02x %02x %02x %02x %02x\n"
  			 "%02x %02x %02x %02x\n"
  			 "%02x %02x %02x %02x\n"
  			 "%02x %02x %02x %02x\n"
  			 "%02x %02x %02x %02x\n",
  			 c[0], c[1], c[2], c[3], c[4], c[5],
  			 c[6], c[7], c[8], c[9], c[10], c[11],
  			 c[12], c[13], c[14], c[15],
  			 c[16], c[17], c[18], c[19],
  			 c[20], c[21], c[22], c[23],
  			 c[20], c[21], c[22], c[23]
  		);
  #endif
  		(*ifp->if_input)(ifp, m);
  		if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
  	}
  	if (STAILQ_FIRST(&xferq->stfree) != NULL)
  		fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
  }
  
  
  static devclass_t fwe_devclass;
  
  static device_method_t fwe_methods[] = {
  	/* device interface */
  	DEVMETHOD(device_identify,	fwe_identify),
  	DEVMETHOD(device_probe,		fwe_probe),
  	DEVMETHOD(device_attach,	fwe_attach),
  	DEVMETHOD(device_detach,	fwe_detach),
  	{ 0, 0 }
  };
  
  static driver_t fwe_driver = {
          "fwe",
  	fwe_methods,
  	sizeof(struct fwe_softc),
  };
  
  
  DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
  MODULE_VERSION(fwe, 1);
  MODULE_DEPEND(fwe, firewire, 1, 1, 1);
  